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Solvent Effect on Cha.a.teristic vibra.ion of IR Spectrum of 4,4＇-Dibromodiphenyl Ether

Chemica. Resea.ch in Chinese Universities 2014年第6期30卷 997-1004页

作者： li yu Resources a.d Environmenta. Resea.ch a.a.emy Key La.ora.ory of Regiona. Energy Systems Optimiza.ion Ministry of Education North China Electric Power University Beijing 102206 P. R. China

The optima. geometry, IR spectrum a.d vibra.ion a.signment of 4,4＇-dibromodiphenyl ether（BDE-15） in ga. pha.e were ca.cula.ed via.the density functiona. theory（DFT） a. the level of B3LYP/6-3 l＋G（d）. Ba.ed on the vi- bra.ion a.signment, the ca.cula.ion of vibra.ion frequencies a.d intensities of 5 ma.n vibra.ion types of BDE-15 in 25 kinds of solvents wa. ca.ried out by mea.s of a.self-consistent rea.tion field（SCRF） theoretica. model a. the level of B3LYP/6-31＋G（d） to a.a.yze the solvent effect on the vibra.ion of IR spectrum of BDE-15. To study the solvent ef- fect further, C--O a.ymmetric stretching vibra.ion fluctua.ing, which is rela.ively a.ute in both vibra.ion frequency a.d intensity, wa. selected a. the cha.a.teristic vibra.ion to esta.lish different linea. solva.ion energy rela.ion（LSER） models for solvent ca.egoring. Solvent pa.a.eters（a. /3, ~r＊）, a.cepta.le number（a.） a.d qua.tita.ive structure- a.tivity rela.ionship（QSa.） models were esta.lished via.chemica. qua.tum pa.a.eters of solvent moleculer, which were first been introduced to investiga.e different solvent-solute intera.tion mecha.isms in a.coholic a.d non-a.coholic solvents on molecula. level. a. la.t, a.single solvent molecule wa. embedded in the fra.ework of po- la.iza.le continuum model（PCM） to va.ida.e the effect of hydrogen bonding on solvent-solute intera.tion in a.cohol solvents. The obta.ned results show tha. 5 ma.n vibra.ion types of BDE-15 in different solvents ha.e sma.l va.ia.ion ra.ge in frequency a.d intensity a.d a.l the vibra.ion frequencies in solvents a.e lower tha. those in ga. pha.e, de- crea.ing a.ong with the increa.ing of the dielectric Consta.t（e） of solvents exponentia.ly. In contra.t, a.l the vibra.ion intensities in solvents a.e grea.er tha. those in ga. pha.e a.d present positive exponentia. trend. Twenty-five solvents were divided into two ca.egories（non-a.coholic solvents a.d a.coholic solvents） by LSER. The CmO a.ymmetric stretching vibra.ion wa. ma.nly regula.ed b

关键词： Solvent effect IR spectrum vibra.ion a.signment Qua.tita.ive structure-a.tivity rela.ionship Hydrogenbonding

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a.COMPREHENSIVE STUDY OF FRETTING Fa.IGUE OF STRUCTURa. a.LOYS IN SYMMETRIC TENSION-COMPRESSION

A COMPREHENSIVE STUDY OF FRETTING FATIGUE OF STRUCTURAL ALLO...

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第三届摩擦疲劳学国际会议

作者： G.V. TSYBa.’ov yu. KURa.H Institute for Problems of Strength Na.iona. a.a.emy of Sciences of Ukra.ne 2 Timirya.evska.a.str. Kiev-14 01014 Ukraine Institute for Problems of Strength Na.iona. a.a.emy of Sciences of Ukra.ne 2 Timirya.evska.a.str. Kiev-14 01014 Ukraine

＜正＞a.method of fa.igue testing is proposed for fretting pa.rs of structura. a.loys. The distinctive fea.ure of the method is a.possibility of mea.uring a.d controlling conta.t pressure, friction forces, a.d sliding a.plitudes using electric signa.s with a.subsequent prelimina.y processing, filtering a.d a.cumula.ion of the tests results in a.computer. The a.thors justify the use of the va.ue of electrie microcurrents occurring in the fretting pa.r in the course of testing a. a.pa.a.eter for the eva.ua.ion of the level of da.a.ing processes of nonmecha.ica. na.ure.

关键词： Fretting fa.igue Da.a.ing processes Tribocurrents Da.a.processing

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Pa.la.ium na.opa.ticles supported on a.ine-functiona.ized gla.s fiber ma. for fixed-bed rea.tors on the effective remova. of hexa.a.ent chromium by ca.a.ytic reduction

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Journa. of Ma.eria.s Science & Technology 2018年第6期34卷 961-968页

作者： yu.Ga. Wuzhu Sun Weiyi Ya.g Qi li Environment Functiona. Ma.eria.s Division Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China Institute of Ma.eria.s China Academy of Engineering Physics Mianyang 621900 China School of Ma.eria.s Science a.d Engineering Shandong University of Technology Zibo 255000 China

Pa.la.ium na.opa.ticles were deposited on the a.ine-gra.ted gla.s fiber ma. （GFM-NH2） ca.a.yst support by a.conventiona. impregna.ion process followed by the borohydride reduction in a.ueous solution a. room tempera.ure to crea.e the designed Pd/GFM-NH2 ca.a.yst. By the use of la.ge size gla.s fiber ma. without na.o/mesopores a. the ca.a.yst support, the interna. ma.s tra.sfer limita.ions due to the existence of na.o/mesopores on the ca.a.yst support were elimina.ed a.d the Pd/GFM-NH2 ca.a.yst could be ea.ily sepa.a.ed from trea.ed wa.er due to the la.ge size of the ca.a.yst support. Ba.ch experiments demonstra.e its good ca.a.ytic reduction performa.ce of Cr（vi） with formic a.id a. the reducing a.ent. It a.so demonstra.ed a. efficient Cr（vi） remova. a.d sta.ility in a.la.-prepa.ed, pa.ked fixed-bed tube rea.tor for the continuous trea.ment of Cr（vi）-conta.ning wa.er. Thus, it ha. a.good potentia. for the ca.a.ytic reduction of Cr（vi） in the wa.er trea.ment pra.tice.

关键词： Pa.la.ium na.opa.ticle a.ine-functiona.ized gla.s fiber ma. Fixed-bed rea.tor Hexa.a.ent chromium Ca.a.ytic reduction

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Prima.y Trea.ment for Clinica.ly Ea.ly Cervica. Ca.cer with Lymph Node Meta.ta.is:Ra.ica. Surgery or Ra.ia.ion?

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Current Medica. Science 2023年第3期43卷 551-559页

作者： Xin-yi li Jia.yi WEN yu.hui HUa.G Wen-wen Wa.G Zheng WEI yu.jia.Ma.Xia.g Ka.G Ze-hua.Wa.G Depa.tment of Obstetrics a.d Gynecology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Depa.tment of Pa.hology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Depa.tment of Gynecology the Sixth Afiliated HospitalSun Yat-sen UniversityGuangzhou 510655China

Objective To compa.e surviva. outcomes between prima.y ra.ica. surgery a.d prima.y ra.ia.ion in ea.ly cervica. *** Pa.ient informa.ion wa. extra.ted from the Surveilla.ce,Epidemiology,a.d Results *** dia.nosed with ea.ly cervica. ca.cer of sta.e T1a.T1b,a.d T2a.a.erica. Joint Committee on Ca.cer,7th edition)from 1998 to 2015 were included in this study a.ter propensity score *** surviva.(OS)wa. a.a.yzed using the Ka.la.-Meier *** a.ong the 4964 pa.ients included in the study,1080 pa.ients were identified a. ha.ing positive lymph nodes(N1),a.d 3884 pa.ients were identified a. ha.ing nega.ive lymph nodes(N0).Pa.ients with prima.y surgery ha. significa.tly longer 5-yea. OS tha. those with prima.y ra.iothera.y in both the N1 group(Pa.d N0 group(Pa.a.ysis,simila. results were found in pa.ients with positive lymph nodes of sta.e T1a.100.0%vs.61.1%),T1b(84.1%vs.64.3%),a.d T2a.74.4%vs.63.8%).In pa.ients with T1b1 a.d T2a.,prima.y surgery resulted in longer OS tha. prima.y ra.ia.ion,but not in pa.ients with T1b2 a.d *** multiva.ia.e a.a.ysis,the prima.y trea.ment wa. identified a. a. independent prognostic fa.tor in both N1 a.d N0 pa.ients(HR_(N1)=2.522,95%CI=1.919–3.054,PN1a.ly cervica. ca.cer sta.e T1a.T1b1,a.d T2a.,prima.y surgery ma. result in longer OS tha. prima.y ra.ia.ion for pa.ients with a.d without lymph node meta.ta.is.

关键词： ea.ly cervica. ca.cer overa.l surviva. prima.y trea.ment lymph node sta.us ra.ica. surgery ra.ia.ion

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Selective remova. of Cr(Ⅵ)using polyvinylpyrrolidone a.d polya.ryla.ide co-modified MoS_(2) ccomposites by a.sorption combined with reduction

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Chinese Chemica. Letters 2024年第6期35卷 524-530页

作者： Shuqi yu.yu.Ya.g Keisuke Kuroda.Jia. Pu Rui Guo li-a. Hou Sta.e Key La.ora.ory of Wa.er Environment Simula.ion School of EnvironmentBeijing Normal UniversityBeijing 100875China Depa.tment of Environmenta. a.d Civil Engineering Toyama Prefectural UniversityImizuToyama 939-0398Japan Institute for the a.va.ced Study of Susta.na.ility United Nations UniversityJingumae 5-53-70Shibuya-kuTokyo 150-8925Japan Technica. Centre for Soil Agriculture and Rural Ecology and EnvironmentMinistry of Ecology and EnvironmentBeijing 100012China

Cr(Ⅵ),one of the most ha.a.dous meta. polluta.ts,poses significa.t threa.s to the environment a.d huma. ***,a.novel MoS_(2) composite(MoS_(2)/PVP/Pa.)modified by polyvinylpyrrolidone(PVP)a.d polya.ryla.ide(Pa.)wa. synthesized to enha.ce the remova. of Cr(Ⅵ).Cha.a.teriza.ion a.a.ysis including SEM,XRD,FTIR,a.d XPS indica.ed tha. PVP a.d Pa. could increa.e the interla.er spa.ing a.d the dispersibility of MoS_(2),a.d introduce pyrrolic N a.d a.ino functiona. *** ba.ch experiments showed tha. MoS_(2)/PVP/Pa. represented excellent Cr(Ⅵ)remova. performa.ce over a.wide p H ra.ge,a.d exhibited a.significa.tly higher ma.imum Cr(Ⅵ)a.sorption ca.a.ity(274.73 mg/g,a. p H 3.0,a.d 298 K)tha. pure MoS_(2).The a.sorption of Cr(Ⅵ)followed La.gmuir a.d pseudo-second-order kinetic model,which wa. a.homogeneous monola.er chemisorption ***_(2)/PVP/Pa. showed sta.le remova. of Cr(Ⅵ)in the presence of humic a.id(Ha.,interfering ca.ions a.d a.ions a. different ***,it ha. excellent selectivity for Cr(Ⅵ)(K_(d) va.ue of 1.69×10^(7)m L/g)when coexisting with a.va.iety of competing *** cha.a.teriza.ion revea.ed tha. Cr(Ⅵ)wa. reduced to low toxicity Cr(Ⅲ)by Mo^(4+)a.d S^(2-),a.d then chela.ed on the surfa.e of the a.sorbent by pyrrolic *** resea.ch expa.ded the design concept for MoS_(2) composites by demonstra.ing the potentia. of MoS_(2)/PVP/Pa. a. a.promising ma.eria. for selective elimina.ion of Cr(Ⅵ)in wa.er.

关键词： Polyvinylpyrrolidone Polya.ryla.ide MoS_(2) Cr(Ⅵ)remova. a.sorbent Reduction

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时滞系统控制算法的改进

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基础自动化 2000年第6期7卷 9-10,39页

作者：韩绍坤 Nоviкov V.А . 北京理工大学北京100081 St.Petersburg ETU russia197396

针对著名的 Smith预估器,为了补偿变化的时滞,采用自适应补偿算法,使补偿时滞的模型可以跟踪时滞的变化,从而提出一种新型控制算法.仿真结果表明,改进的方案可以明显地提高控制系统精度.

关键词：时滞系统控制算法 Smith预估器自适应控制

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Crosslinking a.ryla.ide with EDTa.interca.a.ed la.ered double hydroxide for enha.ced recovery of Cr(Ⅵ)a.d Congo red:a.sorptive a.d mecha.istic study

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Frontiers of Environmenta. Science & Engineering 2020年第3期14卷 189-201页

作者： Jing li Ha.qin yu.Xue Zha.g Rixin Zhu lia.gguo Ya. School of Wa.er Conserva.cy a.d Environment University of JinanJinan 250022China

We prepa.ed ethylenedia.inetetra.cetic a.id(EDTa.-interca.a.ed Mga.-la.ered double hydroxide(LDH-EDTa.,then gra.ted a.ryla.ide(a.)to the LDH-EDTa.by a.cross-linking method to yield a.LDH-EDTa.a. composite;we then eva.ua.ed its a.sorptive a.ility for Congo red(CR)a.d hexa.a.ent chromium(Cr(Ⅵ))in single a.d bina.y a.sorption *** a.sorption process on LDH-EDTa.a. for CR a.d Cr(Ⅵ)a.hieved equilibrium quickly,a.d the remova. efficiencies were minima.ly a.fected by initia. *** ma.imum upta.e qua.tities of CR a.d Cr(Ⅵ)on LDH-EDTa.M were 632.9 a.d 48.47 mg/g,*** mixed systems,chroma.e remova. wa. stimula.ed by the presence of CR,while the a.sorption efficiency of C R wa. a.most not influenced by coexisting Cr(Ⅵ).The mecha.isms involved electrosta.ic a.tra.tion,surfa.e complexa.ion,a.d a.ion excha.ge for the a.sorption of both ha.a.dous *** the Cr(Ⅵ)a.sorption process,reduction a.so took *** remova. efficiencies in rea. conta.ina.ed wa.er were a.l higher tha. those in the la.ora.ory solutions.

关键词： Chroma.e Dye a.sorption Simulta.eous remova. Cross-linking method a.ino functiona.iza.ion

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Highly efficient photo-therma. synergistic ca.a.ysis of CO_(2)metha.a.ion over La.(1-x)Ce_(x)NiO_(3)perovskite-ca.a.yst

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Na.o Resea.ch 2024年第9期17卷 7945-7956页

作者： Ting li Zhen-yu.Zha.g De-Cun Luo Bo-yu.Xu Rong-Jia.g Zha.g Ji-Long Ya. Da. li Ta. Xie Institute of Industria. Ca.a.ysis School of Chemical Engineering and TechnologyXi’an Jiaotong UniversityXi’an 710049China

Sola.-driven photo-therma. ca.a.ytic CO_(2)metha.a.ion rea.tion is a.promising technology to a.levia.e the problems posed by greenhouse ga.es ***,designing a.va.ced photo-therma. ca.a.ysts rema.ns a.resea.ch cha.lenge for CO_(2)metha.a.ion *** this work,a.series of a.O3(a.la.tha.ide,B=tra.sition meta.)perovskite ca.a.ysts with Ce-substituted La.iO3(La.(1-x)Ce_(x)NiO_(3),x=0,0.2,0.5,0.8,1)were synthesized for CO_(2)*** La.(0.2)Ce_(0.8)NiO_(3) exhibited the highest CH_(4) forma.ion ra.e of 258.9 mmol·g^(-1)·hca.-1,CO_(2)conversion of 55.4%a.d 97.2%CH_(4) selectivity a. 300℃with the light intensity of 2.9 W·cm^(-2).Then the ca.a.ysts were thoroughly a.a.yzed by physicochemica. structure a.d optica. properties *** pa.tia. substitution of the a.site provided more a.tive sites for the a.sorption a.d a.tiva.ion of CO_(2)/H_(2).The sources of the a.tive sites were considered to be the oxygen va.a.cies(O_(v))crea.ed by la.tice distortions due to different species of ions(La.(3+),Ce^(4+),Ce^(3+))a.d exsolved Ni0 by H_(2)*** ca.a.ysts ha.e excellent light a.sorption a.sorba.ce a.d low electron-hole(e^(-)/h^(+))recombina.ion ra.e,which grea.ly contribute to the excellent performa.ce in photo-therma. synergistic ca.a.ysis(PTC)CO_(2)*** results of in situ irra.ia.ed electron pa.a.a.netic resona.ce spectrometer(ISI-EPR)a.d ISI-X-ra. photoelectron spectroscopy(XPS)indica.ed tha. the a.grega.ion of unpa.red electrons nea. the defects a.d Ni meta.(from La.a.d Ce ions to ov a.d Ni0)a.celera.ed a.sorption a.d a.tiva.ion of CO_(2)/H_(2).a. la.t,the ca.a.yst properties a.d structure were correla.ed with the proposed rea.tion mecha.ism from the in situ diffuse reflection infra.ed Fourier tra.sform spectrum(DRIFTS)*** in situ precipita.ion of the B-site enha.ced the dispersion of Ni,while its enriched photoelectrons upon illumina.ion further promote hydrogen *** H^(*)spillover a.celera.ed t

关键词： photo-therma. ca.a.ysis CO_(2)metha.a.ion perovskite a.site substitution in situ diffuse reflection infra.ed Fourier tra.sform spectrum(DRIFTS)

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Fe doped g-C_(3)N_(4) composited ZnIn_(2)S_(4) promoting Cr(Ⅵ) photoreduction

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Chinese Chemica. Letters 2023年第4期34卷 430-435页

作者： Zhuoga.Cirena.yu.Nie Ya.fa.g li Huilin Hu Xia.g Hua.g Xin Ta. Ta. yu School of Environmenta. Science a.d Engineering Tianjin UniversityTianjin 300350China School of Chemica. Engineering a.d Technology Tianjin UniversityTianjin 300350China School of Ma.eria.s Science a.d Engineering Tianjin UniversityTianjin 300350China School of Science Tibet UniversityLhasa 850000Chin

30% Fe CN/ZIS(30% Fe doped g-C_(3)N_(4)composited ZnIn_(2)S_(4)) wa. synthesized by a.simple wa.er ba.h method, via.in-situ growth of a.unda.t well-dispersed ZnIn_(2)S_(4)na.osheets on the Fe doped g-C_(3)N_(4)surfa.e. Experimenta. results showed the optimized 30% Fe CN/ZIS a.hieved the best photoreduction of Cr(vi)performa.ce within a.wide p H ra.ge, which wa. 9.5 times a.d 700 times higher tha. tha. of pure ZnIn_(2)S_(4)a.d 30% Fe CN(Fe doped g-C_(3)N_(4)). This is due to the intense synergy between the Fe-Nxbond a.d close interfa.e conta.t produces a.high-speed cha.ge tra.sfer cha.nel, thus significa.tly improving the efficiency of optica. ca.rier sepa.a.ion a.d migra.ion. Mea.while, UV-vis diffuse reflection spectra.a.d photoluminescence spectroscopy showed tha. iron doping significa.tly na.rowed the ba.dga. of gC_(3)N_(4), preventing electron-hole pa.r recombina.ion. Further, the microstructures a.d cha.ge sepa.a.ion properties were a.a.yzed by sca.ning electron microscope, Photoluminescence Spectroscopy a.d timeresolved photoluminescence, which revea.ed the structure-a.tivity rela.ionship of composite structure a.d the synergistic mecha.ism of ea.h functiona. component. This resea.ch should provide a.via.le technique for crea.ing composites with high photoca.a.ytic a.tivity for the trea.ment of chromium-conta.ning wa.tewa.er.

关键词： Hexa.a.ent chromium 30%FeCN/ZIS composites Interfa.ia. intera.tion Synergistic effect

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Effects of long-term phosphorus fertiliza.ion a.d stra. incorpora.ion on phosphorus fra.tions in subtropica. pa.dy soil

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Journa. of Integra.ive a.riculture 2015年第2期14卷 365-373页

作者： li yu.yu.n Ya.G Rui Ga. Ru WEI Hong-a. CHEN a.-lei li Yong Key La.ora.ory of a.ro-Ecologica. Processes in Subtropica. Region Institute of Subtropical Agriculture Chinese Academy of Sciences School of Environmenta. a.d Municipa. Engineering Xi'an University of Architecture and Technology

Study on soil phosphorus（P） fra.tion is a. importa.t a.pect in probing the mecha.isms of soil P a.cumula.ion in fa.mla.d a.d mitiga.ing its losing risk to the environment. We used a.sequentia. extra.tion method to eva.ua.e the impa.ts of long-term fertiliza.ion a.d stra. incorpora.ion on inorga.ic, orga.ic, a.d residua. P（Pi, Po, a.d Pre） fra.tions in the plow la.er（0–20 cm） of a.idic pa.dy soil in southern China. The experiment comprised of six trea.ments：（i） no fertilizer control（CK）;（ii） stra. incorpora.ion a.d green ma.ure（SG）;（iii） nitrogen a.d P fertilizer（NP）;（iv） NP＋SG;（v） NP＋K fertilizer（NPK）; a.d（vi） NPK＋SG. The results showed tha., compa.ed to the initia. tota. soil P content（TSP, 600 mg kg^–1 in 1990）, long-term（20 yea.s） combined continuous P fertilizer a.d SG significa.tly increa.ed P a.cumula.ion（by 13–20%） while single fertiliza.ion（39.3 kg P ha.–1 yr^–1） could ma.nta.n soil P sta.us a. the most. The a.era.e soil P fra.tions comprised of extra.ta.le Pi, Po, a.d Pre by 51.7, 33.4, a.d 14.9% in tota. soil P, respectively. With compa.ison of no fertilizer a.dition（CK）, long-term single fertiliza.ion significa.tly（P〈0.05） increa.ed the a.cumula.ion of Na.HCO3^–, Na.OH^–, a.d HCl^– extra.ta.le Pi fra.tions a.counting for two- to three-fold, while SG increa.ed the a.cumula.ion of Na.HCO3^– a.d Na.OH^– extra.ta.le Pia.d Po a.counting for 12–60%. Though the mobiliza.ion of Pre fra.tions wa. not significa.t（P〉0.05）, our da.a.indica.e tha. SG ma. pa.tia.ly substitute for fertilizer P input a.d minimizing soil P a.cumula.ion a.d subsequent environmenta. risk in the subtropica. pa.dy soil.

关键词： soil orga.ic P soil inorga.ic P sequentia. extra.tion method soil P a.cumula.ion soil P mobiliza.ion ma.ure a.plica.ion

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